Vacuum-feed attachment for carbureters



F'. v. RISINGER. VACUUM FEED ATTAcHmEN FOR CARBURETERS.

APPLICATION FILED MAR. 2l, 1919. l

'Patented May 25 F. V. RISINGER. VACUUM FEED ATTACHMENT FOR CARBURETERS.

APPLICATION FILED MAR. 24. I9I9.

gnwntoz fel-red forni of the UNITED STATES PATENT OFFICE.

FRANK V. RISINGER, OF YOUNGSTOWN, OHIO, ASSIGNOR TO THE BLOCK GAS MANTLE C0., OF YOUNGSTOWN, OHIO.

VACUUM-FEED ATTACHMENT FOR CARBURETERS.

Application filed March 21, 1919.

To all 'mlm/1i it may concern Be it known that I, FRANK V. R-isIVNoiin, a citizen of the United btates7 residing at Youngstown, in the county of Mahoning.

and State of Ohio. have invented anew ,and useful Vaci1iiiii-l1`eed Attachment for @an bureters, of which the following is a specification. i

This invention relates to a device for supplying liquid fuel from a primary fuel tank to an explosive engine and is designed primarily for use where the said tank is below the level of the carbureter.

It is an object of the invention to provide a simple and elicient structure of few parts Which will utilize the suction of the engine as a means Jfor elevating the fuel from the tank to a point higher than the farbureter and for intermittently discharging the elevated fuel so that it will be free to flow by gravity to the carbuieter. i

A further object is to eliminate the use of springs and other parts likely to get out of order and to so simplify the device as to reduce to the minimum all danger of breakv ing or otherwise getting out of order.

With the foregoing and other objects in AView which will appear as the description proceeds, the invention consists of voi-tain ni'iigcl details ol construction and coinbinations of parts which will be hereinafter more fully described and pointed out in the claims.

Tin-the accompanying drawings the preinvention has been shown.

In said drawings- Figure 1 is a view partly in section and partly in elevation and showing the first and second steps of the operation of the device. by full lines and dotted lines respectively.

Fig. 2 is a similar ViewY showing the third step of the operation.

Fig. 8 is a secton on line 3 3, Fig. 1.

Fig. 4 is a section on linc #-4, Fig. 1.

Fig. 5 is a face view of the controlling valve.

Fig. 6 is a central section therethrough.

Referring to the figures by characters of Specification of Letters Patent.

Patented May 25, 192.0.

-Serial No. 284,008.

reference 1 designates a reservoir having a bottom outlet 2 connected to a carburetei (not shown) by a tube 3. A vent pipe 4 is located on the upper portion of the reservoir. i

Arranged within the upper portion of the reservoir is a fioat chamber 5 preferably formed of opposed castings (3 fastened together as shown. This chamber has its bottom inclined downwardly toa delivery spout 7 having an outlet S which 'is normally closed by a flap valve 9 or the like. The top of the chamber 5 1s closed and hasa feed pipe 10 opening theieinto and leadiiigfrom a fuel tank (not shown) at a lower level -disk valve 18 is fitted on and rotates upon the pivot member 11 and has a port 19 adapted to move into. and out of register with the port 15, and another port 20 adapted to move into and out of register with the vent 14. A linger 21 extends radially from the disk valve 18.

Mounted on the member 11 is an arm 22 oneA end of which constitutes a weight or counterbalance 23 and is provided with a slot 24. The other end of the arm has a substantially spherical receptacle 25 open at the top and directly under the outlet of the feed pipe 10. An outlet opening 26 is formed in the bottom of this receptacle and is adapted to be closed by a conical valve 27. stem 28 connects this valve to one end of a lever 29 which overhangs the receptacle 25 and is fulcrunied between its ends on a. pin 30 supported by the casing 6. The other end of the lever projects loosely into the slot 24 in said arm 22 and has a rod 31 depending therefrom on which a floaty 32 is mounted, there being a guide 33 on one wall of the chamber 5 in which rod 3.1 is mounted to reciprocate.

A recess 34 is formed in oneside of the arm 22 and the finger 21 extends loosely thereinto. A spring 35 is also preferably interposed between the arm 22 and the disk valve 18 for press-ing said valve firmly to its seat.

As 'the reservoir 1 is located above the level of the primary fuel tank the said reservoir is normally empty vwith the weighted arm 22 supporting the receptacle 25 in elevated position, the float resting on the guide 38, the valve 27 closed, the port 19 in register with the port 15, and the port 20 out of communication with the vent. lVhen the engine is started a suction will be established through the ports 19 and 15 to the intake manifold of the engine and the partial vacuum thus established in the chamber 5 will result in the elevation of liquid fuel from the primary tank through the pipe 10 to the chamber 5. As the fuel enters said chamber it will flow into the receptacle 25 and ultimately over-balance the weighted arm 22, thereby causing the receptacle to move from the position indicated by full lines in Fig. 1 to the position indicated by dotted lines in said figure. During this tilting of the receptacle the valve will be held elevated by the float 32 which, at this time acts as a weight. Consequently the outlet 26 will be opened and the contents of the receptacle will be discharged into chamber 5 'and thence past the self opening valve E) into the reservoir 1. When the receptacle swings downwardly to discharging position, the valve18 is shifted to out oil' the suction and to open communication between chamber 5 and the vent 14:. As soon as the contents of the receptacle 25 have been discharged, the

said receptacle returns automatically to its initial position, restablishes the suction and begins to refill. The foregoing operation is repeated until the level of the liquid in the reservoir and in the chamber 5 reaches a predetermined point whereupon the float 32, which is elevated by the accumulated liquid fuel, will push upwardly through rod 31 against 'the lever 29 and downwardly through the valve 27 against the bottom of y receptacle 25 and lower the receptacle 25 and its valve 27, thereby closing communication with the port 15 and interrupting the suction. As the level of the liquid fuel lowers, the Hoat will also move downwardly, gradually restoring the parts to position to again open communication with the suction port 15. It is understood, of course, that the valve 18 receives its motion from the arm 22 through the linger 21.

an engine for elevating liquid Huid from a primary tank to a point above a carbureter, and including a chamber, a receptacle in the chamber having an outlet, a valve normally closing the outlet, a supply pipe discharging into the receptacle, a suction port, means operated by the downward movement of the receptacle under the weight of liquid directed thereinto for closing the suction port, and a float for lowering the receptacle and closing the suction port when the liquid rises to a predetermined level in the chamber, said float constituting a weight for holding the valve open in the receptacle when the receptacle is lowered prior to the liquid reaching said predetermined level.

v2. Apparatus of the class described including a reservoir, a. chamber therein having valved communication therewith, a tiltably mounted receptacle in the chamber hav ing an outlet, a valve normally closing the outlet, a supply pipe discharging into said receptacle, a suction port, means operated by the downward tilting of the receptacle for closing the suction port, and a float for tilting the receptacle downwardly and constituting a weight for opening the valve when the receptacle is tilted. before the liquid rises to a predetermined level in the chamber and reservoir.

3. Apparatus of the class described including la chamber having a fuel inlet, a receptacle mounted for up and down movement within the chamber, a float controlled lever within the chamber and overhanging the receptacle, a valve in the bottom of the re ceptacle and connected to the lever, means for elevating liquid fuel to the inlet and discharging it into the receptacle by the utilization of the suction of an engine, means operated by the up and down movement of the float with the levelof the liquid in the chamber for' controlling the valve in the receptacle, and means operated by the up and down movement of the receptacle when empty and full respectively, for opening and closing the suction to the chamber and closing and opening a vent to the external atmosphere.

4. Apparatus of the class described including a closed chamber having a valved liquid outlet and an air vent, a receptacle within the chamber and tiltably mounted, said receptacle having an outlet opening in the bottom thereof and a weight for holding the receptacle normally in a predetermined p0- sition, a lever mova-bly connected to and movably with the receptacle, a valve connected to said lever for closing the opening in the bottom of the receptacle, a float connected to the lever, means operated by the suction of anengine for creatinga partial vacuum in said closed chamber to elevate liquid fuel to the receptacle to tilt the reeeptzicle, the Hoet constituting means for retzuding the valve whereby the opening in the bottom of the i'ecepucle is uncovered to discharge the fuel from the receptacle into the chamber, said Hout and valve coperating to cut oli the escape of liquid fuel from the receptacle during the rise of the level of the fuel in the chamber, and means controlled by the tilting of said receptacle foi' intermitf tently Cutting of the suction and opening 10 the Vent simultaneously. i

In testimony that I claim the foregoing as my own, I ture.

have hereto affixed my signa- 

